

A GroupLab sheet reads itself
A printed GroupLab sheet names itself from its codes and is measured from its own markers, so nothing is set by hand.
Windows · macOS · Linux · Android. Since nightly.12.
Features
Every feature, grouped, with where it is explained. The tour walks the main path, print, shoot, scan or photograph, read the numbers; this is the whole list.
Reading a target · The numbers · Sheets and printing · Photos and the phone · Sharing and privacy · Updates and platforms
New in nightly.113
The sheets of a set from Made for your optic are read in any order and pooled into one group, and GroupLab says which sheets are still missing.
New in nightly.113
Three sheets carry a bull you can center on through a scope at 10x: a black disc with a white center and a small dot.
New in nightly.113
A development build installs beside GroupLab from Google Play, so a tester can have both on one phone.


A printed GroupLab sheet names itself from its codes and is measured from its own markers, so nothing is set by hand.
Windows · macOS · Linux · Android. Since nightly.12.


Holes are found for you, and any one can be moved, added, removed, called a flyer or given a note.
Windows · macOS · Linux · Android. Since nightly.28.


Say which bulls you fired at, by rows, columns or a list, and each shot is measured from the bull it was aimed at.
Windows · macOS · Linux. Since nightly.66.


When every shot on a sheet of one shot per bull landed off by the same amount, as an unzeroed rifle does, each goes to the bull it was fired at.
Windows · macOS · Linux · Android. Since nightly.112.


On any other target you place the bulls by hand, draw a scale at each one, and keep the layout as a template for the next sheet.
Windows · macOS · Linux. Since nightly.111.


A target opens by dropping its picture on the window or pasting it, a screenshot or an image copied from a browser included.
Windows · macOS · Linux. Since nightly.71.


The analysis leads with the figures a shooter reads off a target and the zero correction in inches, MOA and mil with the clicks to dial.
Windows · macOS · Linux · Android. Since nightly.95.


CEP 50, 90, 95 and 99 are drawn and listed with their ranges, and under Advanced a circle for any percent you type.
Windows · macOS · Linux. Since nightly.111.


Every figure can say what it means in a few plain sentences, including what having only a few shots does to it.
Windows · macOS · Linux. Since nightly.28.


Compare loads draws each load's figures with the range they could really be, so you can see whether the shots can tell two loads apart.
Windows · macOS · Linux. Since nightly.42.


Every analysis is kept as a session, and one load's sessions are drawn over time with whether they really show it getting better.
Windows · macOS · Linux · Android. Since nightly.71.


The Ballistics screen draws the trajectory and works out your chance of a hit from your own measured group.
Windows · macOS · Linux. Since nightly.96.


Shot coordinates export as a CSV file for a spreadsheet, and import from other target software's CSV.
Windows · macOS · Linux. Since nightly.95.


Choose a sheet from the library and everything it takes to print it at its true size is beside the list.
Windows · macOS · Linux. Since nightly.96.


Give the distance, your lowest magnification or a red dot's size and the number of shots, and GroupLab draws bulls you can center on through that optic.
Windows · macOS · Linux. Since nightly.111.


The zeroing grids are drawn to be read through a scope, with heavier lines at every half and whole unit and the scale printed on the sheet.
Windows · macOS · Linux. Since nightly.111.


For a target larger than a scanner takes, the Targets screen says whether a phone photograph of it has enough detail, and a tiled target prints on one large page with cut lines.
Windows · macOS · Linux. Since nightly.111.


A scan measures how large the sheet was really printed and corrects every size, so a sheet your printer shrank still measures right.
Windows · macOS · Linux. Since nightly.95.


The sheets of a set from Made for your optic are read in any order and pooled into one group, and GroupLab says which sheets are still missing.
Windows · macOS · Linux. Since nightly.113.


Three sheets carry a bull you can center on through a scope at 10x: a black disc with a white center and a small dot.
Windows · macOS · Linux · Android. Since nightly.113.
The phone has a Targets screen: the whole library and Made for your optic, printed through Android's own print dialog or shared as a PDF.
Android. Since nightly.111.


A photograph is measured at the angle it was taken, up to a limit GroupLab measured, and refused past it with the angle named.
Windows · macOS · Linux · Android. Since nightly.97.
A session is shared as one file and opened on the phone or another computer, picture and marking together.
Windows · macOS · Linux · Android. Since nightly.108.
On the phone, units follow the phone's region, yards and inches in the United States.
Android. Since nightly.111.
On a tablet in landscape or an unfolded phone, the result shows the sheet and its numbers side by side instead of one under the other.
Android. Since nightly.96.


After an analysis GroupLab can send the target to the project to improve detection, asking first unless you choose otherwise.
Windows · macOS · Linux · Android. Since nightly.102.


When GroupLab hits an error it can send a report so the problem can be fixed, automatically, after asking, or never.
Windows · macOS · Linux · Android. Since nightly.103.


If you say yes, GroupLab reports what it runs on and how fast, and the published figures count every computer once.
Windows · macOS · Linux · Android. Since nightly.109.


Words like sigma, CEP, MOA and bull are underlined with dots in GroupLab and on the website; point at one for a plain explanation.
Windows · macOS · Linux. Since nightly.96.
GroupLab updates itself, and the update bar lists every build you skipped, newest first, with what each changed.
Windows · macOS · Linux. Since nightly.49.
Every nightly is built for Apple silicon and Intel Macs as well as Windows and Linux.
macOS. Since nightly.91.
A development build installs beside GroupLab from Google Play, so a tester can have both on one phone.
Android. Since nightly.113.
The pictures are the desktop application's, from the newest build. Phone screens come once the phone's look is settled.